﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Enter.Common.statics;

namespace Enter.Common.internals
{
	internal sealed class SafeCheck
	{

		#region 身份证号码验证

		/// <summary>
		/// 验证身份证号码
		/// </summary>
		/// <param name="Id">身份证号码</param>
		/// <returns>验证成功为True，否则为False</returns>
		public static bool CheckIDCard(string Id)
		{
			if (Id.Length == 18)
			{
				bool check = CheckIDCard18(Id);
				return check;
			}
			else if (Id.Length == 15)
			{
				bool check = CheckIDCard15(Id);
				return check;
			}
			else
			{
				return false;
			}
		}

		/// <summary>
		/// 验证15位身份证号
		/// </summary>
		/// <param name="Id">身份证号</param>
		/// <returns>验证成功为True，否则为False</returns>
		private static bool CheckIDCard18(string Id)
		{
			long n = 0;
			if (long.TryParse(Id.Remove(17), out n) == false || n < Math.Pow(10, 16) || long.TryParse(Id.Replace('x', '0').Replace('X', '0'), out n) == false)
			{
				return false;//数字验证
			}
			string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
			if (address.IndexOf(Id.Remove(2)) == -1)
			{
				return false;//省份验证
			}
			string birth = Id.Substring(6, 8).Insert(6, "-").Insert(4, "-");
			DateTime time = new DateTime();
			if (DateTime.TryParse(birth, out time) == false)
			{
				return false;//生日验证
			}
			string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
			string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
			char[] Ai = Id.Remove(17).ToCharArray();
			int sum = 0;
			for (int i = 0; i < 17; i++)
			{
				sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
			}
			int y = -1;
			Math.DivRem(sum, 11, out y);
			if (arrVarifyCode[y] != Id.Substring(17, 1).ToLower())
			{
				return false;//校验码验证
			}
			return true;//符合GB11643-1999标准
		}

		/// <summary>
		/// 验证18位身份证号
		/// </summary>
		/// <param name="Id">身份证号</param>
		/// <returns>验证成功为True，否则为False</returns>
		private static bool CheckIDCard15(string Id)
		{
			long n = 0;
			if (long.TryParse(Id, out n) == false || n < Math.Pow(10, 14))
			{
				return false;//数字验证
			}
			string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
			if (address.IndexOf(Id.Remove(2)) == -1)
			{
				return false;//省份验证
			}
			string birth = Id.Substring(6, 6).Insert(4, "-").Insert(2, "-");
			DateTime time = new DateTime();
			if (DateTime.TryParse(birth, out time) == false)
			{
				return false;//生日验证
			}
			return true;//符合15位身份证标准
		}
		#endregion

		#region 图片验证

		/// <summary>
		/// 判断是否为图片
		/// </summary>
		/// <param name="Files"></param>
		/// <returns></returns>
		public static bool IsJPGstr(string Files)
		{
			string namex = ".jpg|.gif|.jpeg|.png|.bmp";
			return IsStr(Files, namex);

		}

		#endregion


		#region Flash  验证

		/// <summary>
		/// 判断是否为Falsh
		/// </summary>
		/// <param name="Files"></param>
		/// <returns></returns>
		public static bool IsOther(string Files, string namex)
		{
			//string namex = ".swf|.fla";
			return IsStr(Files, namex);

		}

		#endregion

		#region 文件验证

		/// <summary>
		/// 判断是否为Falsh
		/// </summary>
		/// <param name="Files"></param>
		/// <returns></returns>
		public static bool IsSwfstr(string Files)
		{
			string namex = ".swf|.fla";
			return IsStr(Files, namex);

		}

		#endregion


		#region 私有方法
		/// <summary>
		/// 文件验证
		/// </summary>
		/// <param name="Files">文件名</param>
		/// <param name="ext">扩展名</param>
		/// <returns></returns>
		private static bool IsStr(string Files, string ext)
		{
			try
			{
				string namex = ext;
				string ex = (FilesStatic.GetExtension(Files)).ToLower();
				foreach (string extname in namex.ToString().Split('|'))
				{
					if (ex == extname)
					{
						return true;

					}
				}
				return false;
			}
			catch
			{
				return false;
			}

		}


		#endregion


		#region 判断是否为物理地址

		public static bool IsMap(string Files)
		{
			Files = Files.Replace("//", ":");
			if (Files.IndexOf(':') > 0)
			{
				return true;
			}
			return false;

		}

		#endregion

	}
}
